Steam-boiler tube and flue scraper or cleaner.



' No.. 834.459.l

'-0'. vS.1)E7,4\N. STEAM EOILEE TUBE ANDELUE SGEAEER '0E CLEANER.

APrLIoATIoN EILED JULY 14, 1905.

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PATENTBD 0011.30, 19o'6.

- i 'o.'s .DEAN.

STEAM BOILER T UBE AND PLUE SGRAPBR 0R CLEANER;

APPLICATION FLBD JULY14,1005.

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' @lumens UNITED sTATEs VPA'IEIWI OFFIOE.

`CYRUS S. DEAN, OF BUFFALO, NEW YORK, ASSIGNOR TO ALBERT D. JAMIESON, OFBUFFALO, NEW YORK.

Specification of Letters Patent.

Patented Oct. 30, 1906.

Application filed July 14.1905. Serial No. 269.694.

ATo all whom t may concern.:l

- Beit known that I, CYRUs S. DEAN, a subect of the King of GreatBritain, residing at uifalo, county of Erie, and State of New York, haveinvented certain new and useful Improvements in Steam-Boiler Tube andFlue lScrapers or Cleaners, of which the following is a specification.

This invention relates to steam-boiler tube and flue scrapers orcleaners.

In water-tube boilers' scale is deposited in the tubes by the water, andthis deposit sometimes becomes quite thick and very difiicult ofremoval.

The object of the present invention is the provision of a scraper orcleaner intended for use on both fire and water tubes or iiues, butparticularly adapted for the removal of the thick and hard scale in thetubes of Watertube boilers, which will be of im roved construction andoperate in a nove manner to cut off or remove the scale rapidlyand'eifectively from the entire inner area of the tube.

- To this 'end the invention contem lates the provision of a rotaryturbine-whee carrying centrifugally-actuatable cutters or cleaners andhaving its axis of rotationfldisposed lcrosswise of the tube or ilue, inconnection with novel means for automatically turning the turbine-.wheelsidewise at a desired rate of speed, whereby as it advances through thetubev or flue the cutting action is also carriedv on circularly inrelation to the tube or flue, and thus successive zones of the tube orflue are completely cleaned as the device ad- VitIlCeS.

y Associated with the foregoing novel features are other improveddevices.

The invention is set forth in detail hereinafter, and the novel featuresare recited in the ap ended claims.

In the accompanying drawings, Figure 1 is a side elevation Fig. 2, alongitudinal section of my tube and flue cleaner shown within a tube orflue Fig. 3, a section on line 3 3 of Fig. 1; Fig. 4, a section on line4 4 of Fig. 2; Fig. 5, a section on line 5 5 of Fig. 3; Fig. 6, asection on line 6 6 of Fig. 2 and Fig. 7, a detail section through theturbine-wheel, showing the cutter and its springs.

An ordinary tube or flue of a steam-boiler shown at 1.

The casing or shell is made in two longitudinal halves 2 and 3, Figs. 1and 2, which are circularly hollowed out at 4 in the line of theirdiameter for the reception of a rotary duplex turbine-wheel composed ofthe parts 5 and 5', cast integral with the connectinghub 6 and separatedby an annular space 7, in which are pivoted on a pin or pins 8 one ormore cutters 9. Only one cutter is shown in the present instance, butmore may be used, if desired. The cutter has a knife-edge 10 at itsouter end and a toe 11 at its inner end. Springs 12 and 13, suitablyseated against the hub 6, cushion the outwardand inward movements of thecutter and deaden the noise, while also giving a rebounding action. Thespring 13 prevents the cutter from striking-the tube too hard andinjuriously denting it. v

Arc-shaped recesses 14 in the halves 2 and 3 permit the free swing ofthe cutter when traveling through the casing, forfit will be understoodthat the centrifugal action on the cutter is quite strong on account ofthe very high rate of revolution of the turbine-Wheel. v

A plurality of tangentially-disposed ducts or ports 15 conduct thesteam, air, or water (the motive fluid) to the vanes of the duplexvturbine-wheel from the chambers 16 and 17,

which communicate with chamber 18.

At the back of the halves 2 and 3 is a circular closure or head 19 and ahollow cap 20. The halves 2 and 3 are connected rigidly together bytransverse bolts 21, and said parts 2 and 3, head 19, and cap 20 arefastened tightly together by longitudinally-extending bolts 22. and cap20 and rigidlyconnected thereto by the nut 23 and pin 24 is a tube 25.Loosely encircling the tube 25 is a sleeve'26, which is coupled orclutched at 27 to a gear 28, which is loose on tube 25 and lies againstthe head 19. The turbine-wheel is rigidly secured to a shaft 29,journaled in the halves 2 and 3, and said shaft has secured thereto aworm-wheel 30, which meshes with a worm 31, fast on a shaft 32, saidshaft 32 carrying a pinion 33, which meshes with gear 28. The sleeve 26carries a head 34 on its outer end, which is connected by coupling 35 tothe hose 36, through which the motive fluid-such as air, steam, orwater-is fed to the device to operate it. Ball-bearings 37 are'used tominimize friction. Antifriction-rollers 38 are car- Extending throughthe head 19Y IOO ried by the head 19 to bear against the interior of thetube or flue 1, as the casing or shell turns therein, and thus minimizefriction. The motive iiuid, coming from hose 36, passes through tube 25,and thence through chambers 18, 16, and 17, and ducts 15 to the duplexturbine-wheel, causing the latter to rotate very rapidly, resulting inan outward throw of the cutter or cutters 19. When the cutter 19 isassing through the casing, it plays throughD the Slot or recess 14; butat other times it strikes very rapidly against the tube or ilue 1 andcuts the scale or other foreign substance therefrom.

It will be understood that the device is pushed through the tube or iue,and in thus passing through the tube or iiue the cutter would only cutthe scale in a straight line unless the turbine-wheel is rotatedsidewise as well as in its own plane.

The gears 80, 31, 33, and 28 provide for the automatic turning of theentire casing or shell of the device and the turbine-wheeI carriedthereby, in consequence of which the cutter or cutters not only cutlongitudinally of the tube, but also circularly thereof, and, as aresult, the scale, soot, or other matter adhering to the interior of thetube or flue is cut out by successive zones and the action is very rapidand complete.

Having thus described my invention, what I claim as new, and desire toSecure by Letters Patent, is-

1. In a tube or flue scraper or cleaner, the combination with acleaner-head, of a rotary cutter carried by the cleaner-head with itsaxis of rotation positioned so as to lie crosswise of the cleaner-head.

' 2. In a tube or iiuescraper or cleaner, the combination with acleaner-head, of a rotary cutter carried by the forward part of thecleaner-head and projecting therefrom in advance thereof with its axisof rotation positioned so as to lie crosswise of the cleanerhead. v y

3. In a tube or iue scraper or cleaner, the Acombination with acleaner-head, of a rotary cutter carried by the cleaner-head with itsaxis of rotation positioned so as to lie crosswise of the cleaner-head,and means for automatically turning or rotating t-he rotary cuttersidewise in addition to its own rotation.

4. In a tube or flue scraper or cleaner, the combination with acleaner-head, of a rotary turbine-wheel carried by the cleaner-head withits axis of rotation positioned so as to lie crosswise of thecleaner-head, and a cleaner or cutter operated by said turbine-wheel.

5. In a tube or flue scraper or cleaner, the combination with acleaner-head, of a rotary turbine-wheel carried by the cleaner-head withits axis of rotation positioned so as to lie crosswise of thecleaner-head, and a centrifugal cutter carried by said turbine-wheel.

6. In a tube or iiue scraper or cleaner, the

combination with a shell or casing, of a rotary turbine-wheel carried bythe shell or casing with its axis of rotation positioned so as to liecrosswise of the cleaner-head, and a centrifugal cutter connecteddirectly to said turbine-wheel and rotating in the same plane with saidturbine-wheel.

7. In a tube or flue scraper o1` cleaner, the combination with a shellor casing, of a rotary turbine-wheel carried by the shell or casing withits axis of rotation positioned so as to lie crosswise of thecleaner-head, a cleaner or cutter rotated in the same general directionas that of the plane of rotation of said turbine-wheel, and means forautomatically turning or rotating the turbine-wheel and cutter sidewisein addition to its own rotation.

8. In a tube or flue scraper or cleaner, the combination with acleaner-head rotarily mounted to turn on its longitudinal axis, of aturbine-wheel carried by said cleaner-head with its axis of rotationpositioned so as to lie crosswise of the cleaner-head, a cutter operatedby said turbine-wheel and having its axis of rotation disposed crosswiseof the cleaner-head, means for introducing a motive fluid through thecleaner-head to the turbinewheel, and means o erated by the turbinewheelto automatical y turn the cleaner-head on its longitudinal axis andthereby turn or rotate the cutter and turbine-wheel sidewisc in additionto their other rotary movements.

9. In a tube or iiue scraper or cleaner, the combination with acleaner-head rotarily mounted to turn on its longitudinal axis, of aturbine-wheel carried by said cleaner-head with its axis of rotationpositioned so as to lie crosswise of the cleaner-head, a cutter operatedby said turbine-wheel and having its axis of rotation disposed crosswiseof the cleaner-head, a hose for supplying a motive fluid to thecleaner-head and thence to the turbine-wheel, and gearing interposedbetween the hose and the turbine-wheel, Whereby the turbine-wheelautomatically turns the cleaner-head on its longitudinal axis andthereby turns or rotates the cutter and the turbine-Wheel sidewise inaddition to their other rotary movements.

10. In a tube or flue scraper or cleaner, the combination with acleaner-head, of a rotary turbine-wheel, carried thereby with its axisof rotation positioned so as to lie crosswise of the cleaner-head, and apivoted outwardl and inwardly swinging cutter rotating witii theturbine-wheel and swinging in the same general direction as that of theplane of rotation of the turbine-wheel.

l1. In a tube or flue scraper or cleaner, the

combination with a cleaner-head, of a rotary turbine-wheel, carriedthereby with its axis of rotation positioned so as to lie crosswise ofthe cleaner-head, and an outwardly and inwardly swinging cutter pivoteddirectly to IOO IIO

the turbine-Wheel and swinging in the same general direction as that ofthe turbine- Wheel.

12. In a tube or flue scraper or cleaner, the combination With a rotaryturbine-Wheel, of a pvoted outwardly and inwardly' swinging cutterrotating with the turbine-Wheel, and spring mechanism for cushioning themovements of said cutter.

13. In a tube or iiue scraper or cleaner, the combination With a rotaryturbine-Wheel, of

an outwardly and inwardly swinging cutter pivoted to the turbine-Wheel,and springs carried by the turbine-Wheel for cushloning the movementsofthe cutter.

In testimony whereof I hereunto affix my signature in presence of twoWitnesses.

oYRUs s. DEAN.

Witnesses:

SARAH V. LooKWooD, E. EDMoNsToN, Jr.

